Re: [PATCH v2 13/17] intel_iommu: piotlb invalidation should notify unmap

[Yi Liu]

On 2024/8/19 17:57, Duan, Zhenzhong wrote:
> > -----Original Message-----
> > From: Liu, Yi L <yi.l.liu@intel.com>
> > Subject: Re: [PATCH v2 13/17] intel_iommu: piotlb invalidation should
> > notify unmap
> >
> > On 2024/8/5 14:27, Zhenzhong Duan wrote:
> > > This is used by some emulated devices which caches address
> > > translation result. When piotlb invalidation issued in guest,
> > > those caches should be refreshed.
> >
> > Perhaps I have asked it in the before. :) To me, such emulated devices
> > should implement an ATS-capability. You may mention the devices that
> > does not implement ATS-capability, but caches the translation result,
> > and note that it is better to implement ATS cap if there is need to
> > cache the translation request.
>
> OK, will do. Will be like:
>
> "For device that does not implement ATS-capability or disable it
> but still caches the translation result, it is better to implement ATS cap
> or enable it if there is need to cache the translation request."

sorry for a typo. s/request/result/

--
Regards,
Yi Liu